The country also has 402 kilometers (249 miles) of coastline on the Bight of Biafra, part of the Atlantic Ocean. The topography of Cameroon is varied, ranging from tropical rain forests in the south to mountainous highlands in some western central regions, and semi-arid savanna in the far north.
The Ionisphere bounces radio waves back to earth and regulates the amount of radiation that gets to the lower atmospheres. It all depends on the Sun's activity. The stratosphere is what actually protects us from the UV rays of the sun.
if the ionosphere is so thin and has very low denisty how is it able to change the movement of shortwave radio? it isnt like glass or a mirror becuase it really isnt a solid like those are. can the ionosphere be some type of matter? sorry but everyone says radio waves bounce off the ionosphere but no one explains it. they just accept it.